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Gravitational Lensing by Globular Clusters and Arp Objects

Published online by Cambridge University Press:  26 May 2016

Alexander Yushchenko ,
Chulhee Kim ,
Alexander Sergeev ,
Panos Niarchos  and
Vasilis Manimanis
Alexander Yushchenko
Affiliation:
Odessa Astronomical observatory, Odessa National University, park Shevchenko, Odessa, 65014, Ukraine Department of Earth Science Education, Chonbuk National University, Chonju, 561-756, (South) Korea
Chulhee Kim
Affiliation:
Department of Earth Science Education, Chonbuk National University, Chonju, 561-756, (South) Korea
Alexander Sergeev
Affiliation:
The International Centre for Astronomical, Medical and Ecological Research of the Russian Academy of Sciences and the National Academy of Sciences of Ukraine, Golosiiv, Kiev, 03680, Ukraine
Panos Niarchos
Affiliation:
Department of Astrophysics, Astronomy and Mechanics, Faculty of Physics, University of Athens, 157 84 Zografos, Athens, Greece
Vasilis Manimanis
Affiliation:
Department of Astrophysics, Astronomy and Mechanics, Faculty of Physics, University of Athens, 157 84 Zografos, Athens, Greece

Abstract

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We try to explain quasar-galaxy associations by gravitational lensing by globular clusters, located in the halos of foreground galaxies. We propose observational test for verification of this hypothesis. We processed SUPERCOSMOS sky survey and found overdensities of star-like sources with zero proper motions in the vicinities of foreground galaxies from CfA3 catalog. We show mean effect for galaxies with different redshifts. Two effects can explain observational data - these are lensing by globular clusters and lensing by dwarf galaxies. We made CCD 3-color photometry with 2.0-1.2 meter telescopes to select extremely lensed objects around several galaxies for spectroscopic observations.

Type
Part 3 Theoretical Considerations
Information
Symposium - International Astronomical Union , Volume 214: High Energy Processes and Phenomena in Astrophysics , 2003 , pp. 101 - 105
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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